[Bluetooth 5.3 and Auto Connection] Wireless earbud adopt advanced bluetooth 5.3 technology. Compare to 5.2, the Bluetooth 5.3 chip helps your earbuds be matched more easily and faster, can provide you with stronger and more stable signals in a variety of complex environments and no need to worry about signal interruption. Open the lid of the charging case, the bluetooth earphones can be automatically connected to the previous paired device.[Superior Sound Quality and Clear Calls] Bluetooth earbud equipped with 14.2 millimeters vibrating diaphragm speaker driver, provide pure balanced audio and clarity output for you with soft audio and immerse yourself in the wonderful world of music. Thanks to ENC technology, this wireless earphones effectively reducing background noise, creating a stable and clearer calling environment like you are communicating face to face with others.[75H Playtime and LED Display] Wireless bluetooth earbud single charge for 15 Hours playtime, comes with 480mAh charging case could offer 4 times charging, let you enjoy a total of 75 hours music time and you'll always have your music world with you. The LED display on noise cancelling earbud accurately display the remaining power of earbuds and charging case and the charging case supports USB-C charging. Very convenient for your daily life, travel, fitness.[Ergonomic Design and IP7 Waterproof] The sport earbud is ergonomically designed and come with 3 different sizes of soft ear tips(S/M/L) that fit 99% of the contours of the ear canal. When you wear the earbuds will be very comfortable and not easy to fall off. You can use it in many scenarios, such as running, gym, etc. The waterproof earbud waterproof rating at IP7, with nano-coating to professionally protect the interior from the influence of water and sweat and prolong the service life.[Button Control and Wide Compatibility] The multi-function button on earphones in ear can manage audio play or calls effortlessly. You can switch songs, increase and decrease volume, activate voice assistant, answer/reject calls simply by pressing button, but don't need to adjust the music by your device. The over ear earbud is compatible with most devices such as computer, tablet, mobile phone, etc. Very good to meet your daily needs, convenient for your life.